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Задание: Complete the sentences with must, cant or couldnt and use the correct form of the verb in brackets (Заполните предложения с обязательным условием, не можете или не можете использовать правильную форму глагола в скобках)

1) He revised well for the exam. He (Flunk) it.
2) His German is very good. He (grow up) in Germany.
3) You are not enrolling at university? Yo (be) serious!
4) Ann (be) hungry. She hasnt had anything sinse breakfast.
5) Is he going to study for a degree in Physics? He (be) mad; he has never been good at Physics.
6) He (play) football now; hes hurt his leg.
7) Shes late? but he (wait) for her still.
8) I (lose) my passport. Ive just seen it.
9) Susan knew everything. She (hear) our conversation.
10) I saw somebody through the window. They (be) out.